Stop-motion for looms.



J. K. LANNING.

STOP MOTION FOR LOONS.

EL APPLICATION FILED OCT. 21 IEIII.

p :J gQIIe 3 SHEETS-SHEET i.

1. K. LANNING.

STOP MOTION FOR LOOMS.

yAPPLICATION FILED OCT. 2, 19H.

Patente Jan. 15, 1918.

3 SHEETS-SHEET 2.

wor

Jaa-m@ L K. LANMNG.

STOP MTIGN FOR LOGMS.

APPLiCfmoN FILED GCT. 2l 1911.

3 SHEETS-SHEET 3.

JAMES K. LANNING, 0F BOSTON, MASSACHUSETTS.

STOP-MOTION FOR LMS.

Specification of Letters Patent.

Parenteel aaa. tareas..

inipucaaon filed october 2, 1911. serial. no. maaar.

To all whom it* may concern:

Be it known that I. JAMES K. LANNING, a citizen of the United States, and-a resident of Boston, in the count-y of Suffolk and State of Massachusetts, have invented an lmprovement in Stop-Motions for Looms, of which the following description, in connection with the accompanyingidrawings, is a specification, like characters onthe drawings representing like parts.

This invention relates tostepmotions for looms, and more particularly to warp stop motions therefow ln order that the principle of the invention may be readily understood, yIhave disclosed a single embodiment thereof in the accompanying drawings, wherein- Figurevl is a vie.: in transverse vertical section of a loom having my invention applied thereto;

Fig. 2 is a detail in vertical transverse section of the lease rods, the drop bars, the feeler coperating therewith andassociated parts;

Fig. 3 is a side elevation of a drop bar preferably employed with and constituting a portion of my invention;

Fig. 4 is a front elevation of the loom shown iny Fig. l;

Fig. 5 is a detail in side elevation of a portion of the stop mechanism;

Fig. 6 is a plan view of one side of the loom and showing a portion of the-stop mechanism; and

Fig. 7 is a detail in plan view of a portion of the stop mechanism.

My invention relates more particularly to warp stop mechanism for looms, though in certain aspects thereof it may be embodied in other relations. As herein disclosed, however, ll employ in connection with a loom having warp supported drop bars adapted upon warp fault to be positioned in the path of a movable feeler mechanism, connecting means constituting important features of my invention, by which a bunter is interposed in the path of the lay, whereby an indicating drop bar serves to move the shipper lever from its notch, and thereby to shift the belt from the fast to the loose pulley. Preferably and as herein indicated, the parts are so arranged that the loom is stopped upon the backward beat of the lay, but within the scope of my invention-the organization of .parts may be such as to stop the loom upon theforward beat.

Referring more particularly to the drawings, the frame of the loom is indicated at l. The loom may be of any suitable type, but preferably is one having lease rods 22 mounted for oscillating movement upon suitable yokes 3 pivoted at 4 upon suitable. brackets 5 connected to the side frames of:

the loom. The warp threads are divided into two series, as indicated in Fig. l, pass-v ing respectively above and below the lease rods 2. Upon said warp threads and preferably between the lease rods 2 are mounted drop bars 6 guided in their indicating movement by guide bars 7-7 mounted in the said brackets 5. While the drop bars may be of any suitable construction, preferably they are shaped as indicated most clearly in Fig. 3, wherein a bar 6 is represented as provided with an elongated slot 8 for the reception of the corresponding guide bari', and with an eye 9 through which the warp thread is passed. Between the slot 8 and e e 9 is a narrow communicating slit 10 which thus provides shoulders ll at opposite sides of said slit 10, and which shoulders serve to support the drop`u pon the upper edgeof the guide bar 7 when the drop bar has fallen into indicating position. The lower part of the drop bar is provided with an irregularly shaped slot l2, herein shown as of a general key hole form. The drop bar is preferably equipped with the slot 12 vof suitable forma- "ftion, so that the drop bar may be used in warp drawing mechanism. The slot l0 is provided in drop bars which are adapted to have inserted in or used with or acted upon by warp drawing machines. These machines, of construction not herein necessary particularly to describe, customarily grip the drop bars at top and bottom. It would therefore be dilicult or impossible to draw in the threads at the eye 9 at the top, because the dropbar isthere gripped by the warp drawing mechanism. Therefore, in practice the tlirezfds'are drawn in through the elongated slot Sfand after the drop bars are taken out of the machine, the threads at once slip into the eye. 9 at the upper end thereof.A It is necessary to have merely a narrow7 slit, such as indicated connecting the eye 9 an the slot S, because the drop bar when the t read breaks should not be permitted to fall far enough to allow the guide bar to contact with theextreme top of the eye 9. ln other words, the shoulders 1l serve to support the fallen drop bar upon the upper edge of the feeler bar.

headset clutch head 32 into interengagement with the clutch head 3l.

It will be observed that with the exception of the spring 40, which obviously may be omitted, the stop mechanism herein disclosed dispenses wholly with springs to move the parts. Moreover, the bunter or dog il remains stationary at all times until it is lifted into the path of the lay upon the falling of a drop bar..

is previously stated, the stop motion may be effective to stop the loom .upon the forward beat of the lay by so arranging and positioning,- the dog or bunter 4t2 that it is in advance of the lay and adapted to be moved into its path upon warp fault or failure.

From the foregoing description, it will be evident that the stop motion herein disclosed is of exceedin ly simple and yet edeetive construction. y the elimination of springs l avoid all. uncertainty of action of the parts. The dogl or bunter is held stationary until warp fault or failure occurs. rlhe singie feeler cooperates with both banks of drop bars and also co-acts with a single The utilization of a clutch de vice, one part of which is mounted for sliding movement upon its support is an important feature of the invention and permits the utilization of the normally station ary dog or bunter and otherwise simplifies and renders certain the construction of parts.

Having thus described. one illustrative embodiment of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth inl the following claims.

Claims.

l. lli/'arp stop mechanism for looms comprising in combination, a lay and shipper mechanism, indicating' drop bars, a rock shaft mounted thereunder, a feeler thereon, a support distinct from said rock shaft, opposing clutch members co-aXially mounted on said support, means operatively connecting said roel: shaft and said clutch, a cam, and means operatively connecting' said clutch and said cam and said shipper mechanisin.

i2. Warp stop mechanism for looms coniprising in combination a lay and shipper mechanism, a bunter in the path of the lay,

f iulieating drop bars, a rock shaft mounted Coin* i es;

mechanism, indicating drop bars, a rock shaft' mounted under said drop bars, a feeler on said shaft, a support distinct from said rook shaft a clutch coaxially mounted thereon and comprising a fixed member and a member slidable axially of said support, means operativelyl connecting said rock shaft and said support, a cam, means operatively connecting said cam and said support, and means operatively connecting said clutch and said shipper mechanism.

a. Warp stop mechanism for looms comprising in combination a lay and shipper mechanism, indicating drop bars, a rock shaft mounted under said drop bars, a feeler on said shaft, a support distinct from "said rock shaft, a clutch thereon having fixed and sliding members, operative'connections between said roclr shaft and said support, a bunter, a lever adapted to be moved by said slidable clutch member to engage the bunter, operative connections between the bunter and shipper mechanism, a cam, and an op erative connection between said cam and said support.

5. Warp stop mechanism for looms coinprisingF in combination a lay and shipper mechanism, indicating drop bars, a rock shaft mounted under said drop bars, a feeler on said rock shaft, a vsupport distinct from said rock shaft, a clutch thereon' having fixed and slidable members, a lever having arms of which one directly engages the slidable member of the clutch and another cooperates with the shipper mechanism, operative connections between said rock shaft and said support, a cam, and a operative connection between said cam an said support.

6. l/Varp stop mechanism for looms comprising in combination a lay and shipper mechanism, a bunter adapted to be moved into the path of the lay, indicating drop bars, a reci; shaft mounted under said drop bars, a feeler on said rock shaft, a support distinct from said roch shaft, a clutch tliereon having fixed and movable members, op-

crative connections between said rock shaft and said support, a cam shaft, a cam there` on, a lever operated thereby and connected to said sliding clutch member, and operative connections between said sliding clutch member and said bunter.

7. lfilarp stop mechanism for looms comprising in combination, a lay, a shipper mechanism, indicrotingg1 drop bars, a rock shaft mounted thereunder, a fceler thereon, a support distinct from said rock shaft, a clutch composed ofmembers co-axially mounted upon said support, means operativeiy connecting the roclr shaft and said support and between said clutch and said shipper mechanism, and driven means to impart' r lng movement to said clutch.

arp stop mechanism for looms compiismg in combination, a lay and shipper iso mechanism, indicating drop bams, o, rook In testimony whereof, I have sgne m57 shaft mounted thereunder,` a feeler thereon, name to this specification, in the presence of 1i) sullalpolJv distinct from said rock shaft) a, two subscribing Witnesses. c utc t ereon, operative connections e 5 tween said rock shaft and said clutch, a cam, JAMES K LANNING' and operative connections between said Witnesses: clutch and said com and seid shipper mecha,- IRVING U. ToWNsENn, nism. ROBERT H. LAMMLER. 

